Daniel mooee



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gg Infnuuwam:

D, MOORE.

METALLIC CASE.

gm g gititmmps Patented Dec. 5, 1882.

, GTHITDJLEMIWE stopper.

' g UNITED STATES PATIENT OF ICE.

' DANIEL MOORE, OF BROOKL Y N, NEW YORK, ASSIGNOR TO.WILLIAl\ I A. HULBERT, OF SAME PLACE.

METALLICCASE.,

SPECIFICATION forming part of Letters Patent No. 268,709, dated December 5, 1882.

Application filed April 5, 1882. (No model.)

To all whom it may concern Be it known that 1, DANIEL Mooan, a citi- 5 York, have invented certain new and useful Improvements in Metallic Gases; and I dodeclare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same, reference being had to the acompanying'drawings, and to the letters and figures of reference marked thereon, which form a part of this specification.

My invention relates to that class of metallic cases known as postal envelopes, and the result sought to be attained is the production of a light, convenient, and strong case, made in a manner that will meet the requirements of the postal service, securely hold and hermetically seal any substance contained therein,and that can be easily and expeditiously examined by the employs of the department as to its contents, and quickly. and securely closed again. These objects are attained by the construction illustrated in the annexed drawings, in which- Figure 1 is a side view of the case or envelope closed. Fig. 2 is a longitudinal section. Fig. 3 is a sectional view of the cover or cap-piece. Fig. 4 is a sectional view of the Fig. 5 is a top View of the cover. Fig. 6 is a view of a modified form of cylinder in which the corrugations do not extend entirely to its upper end, and Figs. 7, 8, 9, and 10 are sectional details, illustrating modifications in the form of the cap and stopper.

Like letters are used to designate similar parts in the several views.

The letter A indicates a cylindrical case or body, and B is a cap-piece of similar form, these parts being spirally corrugated throughout, thereby forming screw-threads both externally and internally, by means of which the cap, which is of slightly greater diameter, may be caused to engage with and close the body of the envelope. These parts Aqand B are each made from a solid metallic disk that may be drawn by suitable means to any desired length or thickness. When completed they are and, being corrugated throughout into screwlike threads, it is obvious that they may be readily and securely connected, so as to hermetically seal the contents of the case or envelope, thereby preventing the entrance or escape of fluids. Within the cap or cover B is arranged astopper, O, that. may be composed of any suitable material, preferably elastic. This stopper is adapted to be secured within the cap B, so as to enter the upper end of the case A, and yet be withdrawn when the cap or cover is removed. The upper end of the cap is preferably provided with a central rectangular depression or recess, b, within which may be placed the address, which is thereby shielded from abrasion. This depression or recess forms on its under side a projection that enters a corresponding recess, 0, formed in the upper face of the stopper, and these parts may be formed of such relative dimensions as will en able the elastic stopper to be thereby secured within the cap or cover by reason of the frictional cohesion ofsaid parts, the stopper being further secured within the cap by the elasticity of said stopper, which causes it to en gage with the internal screw-threads formed in the cap. It will be seen that by this construction of cylindrical case or envelope the movement of the cap-piece on the case, even to a considerable extent, will not unseal the case until the movement is made to an extent sufficient to cause the several threads made on the elastic stopper, which is pressed more or less into the cylindrical threads, to pass entirely out of the inner cylinder and separate one from the other, the inner cylinder or case A thus remaining sealed until the stopper passes entirely out of said cylinder. The stopper 0, when made of elastic material, is thus secured within the cap B by reason of its engagement with the screw-threads formed therein, as well as by the frictional contact of the recess 0 with the under side of the recess 12, formed in the top of the cap.

If desired, the cap B and stopper 0 may be made without the recesses 11 c, said parts being then connected either by means of pins d d, as

shown in Fig. 7, or by means of lugs or projections cc, formed within the cap, as shown in 50 solid, presenting no laps, seams, or solder, Fig. 9, the pins or logs in either event being I V V sufficient to secure the stopper so as to cause itto turn with the cap and be removed therewith when unclosing the case. When the cap and stopper are connected in either of these ways I prefer to form the case A as shown in Fig. 6, in which the corrugations do not extend entirely to the end, aplain surface, a, of less diameter than the body of the ease or cylinder being left at its end. In this event, also, the stopper 0, which need not be elastic, is slightly tapered downward, as shown in Figs. 8 and 10, so as to enter the reduced portion a of the case A more readily. The pressure of the cap on the periphery and top and of the lugs e or pinsdin the body of the stopper, being in' this instance greater than on that part ofthe stopper inserted in the reduced portion aor mouth of the c lindrit-al case A, will force the stopper up with the cap on turning the latter to unclose the casing or envelope.

A metallic case or envelope of this construc- Having thus described my invention, what I I claim as new, and desire to secure by Letters Patent, is

A metallic case adapted for use as a postal envelope. consisting of the cylindrical case A and cap B, each spirally corrugated throughout, said cap being provided at its end with a rectangular depression adapted to receive the 35 address, and the recessed stopper G, secured within the cap, all substantially as described.

DANL. MOORE.

Witnesses:

GHAs. W. DU BOIS, FRANK S. MOORE. 

